Record Display for the EPA National Library Catalog

RECORD NUMBER: 20 OF 45

OLS Field Name OLS Field Data
Main Title Effects of interfacial properties on collection of fine particles by wet scrubbers /
Author Woffinden, G. J. ; Markowski, G. R. ; Ensor., D. S.
Other Authors
Author Title of a Work
Markowski, G. R.,
Ensor, D. S.,
CORP Author Meteorology Research, Inc., Altadena, Calif.;Industrial Environmental Research Lab., Research Triangle Park, N.C.
Publisher Environmental Protection Agency, Office of Research and Development, Industrial Environmental Research Laboratory ; For sale by the National Technical Information Service,
Year Published 1978
Report Number EPA-600/7-78-097; MRI77-FR-1503; EPA-68-02-2109
Stock Number 22161
OCLC Number 04961877
ISBN pbk.
Subjects Scrubber (Chemical technology)--Mathematical models. ; Surface tension. ; Scrubber (Chemical technology)--Mathematical models. ; Surface tension.
Additional Subjects Air pollution control equipment ; Fines ; Scrubbers ; Mathematical models ; Particles ; Performance evaluation ; Coalescing ; Comparison ; Drops(Liquids) ; Surfaces ; Interfacial tension ; Wet methods
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101DH9L.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 600-7-78-097 Headquarters Library/Washington,DC 01/15/2014
EKAM  EPA-600/7-78-097 Region 4 Library/Atlanta,GA 07/08/1994
EKBD  EPA-600/7-78-097 Research Triangle Park Library/RTP, NC 12/05/2003
ESAD  EPA 600-7-78-097 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-284 073 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation ix, 66 p. : ill. ; 28 cm.
Abstract
The report gives results of an analysis of typical wet scrubber models to determine the effects of surface tension on particle removal efficiency. Particle capture (removal) is a two-step process: collision of a particle with a spray droplet, and coalescence with the droplet. A change in surface tension of the scrubber water can influence both steps. The coalescence process (after a particle collides with a scrubber droplet) has been described by a film-thinning model that assumes that coalescence is controlled by the thinning rate of an air or vapor layer trapped between an impacting particle and droplet. If the film thins and ruptures before the particle rebounds, coalescence occurs. The thinning model predicts that a reduction in droplet surface tension allows deeper particle penetration into the droplet. The escaping vapor film therefore has a longer more resistive path, resulting in longer thinning times, thus reduced coalescence probability. When the surface tension of a scrubber liquid is modified, collection efficiency may be slightly improved or degraded depending on the spray droplet sizes and the sizes of particles being removed.
Notes
Prepared for Environmental Protection Agency, Office of Research and Development. Contract no. 68-02-2109, program element no. EHE624A. June 1978. Includes bibliographical references.